Electric signal device.



J. ROEDER.

ELECTRIC SIGNAL DEVICE- APPLICATION FILED NOV. 6, 1014.

Patented Feb. 12, 1918.

" an sa ar es rairnnar estates.

JDHN ROEDER, 013' CHICAGO, ILLINOIS, ASSIGNOR T0 JACOB W. LARKIN AND ALEXANDER OHARE.

ELECTRIC SIGNAL DEVICE.

Application filed November 6, 1914.

To all whom it may concern:

Be it known that 1, JOHN Roxanna, a sub ject of the Emperor of Germany, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Electric Signal Devices,'of which the following is a specification.

This invention relates to electric signal devices, and more particularly an audible signal or alarm in the form of an electric bell. I

The invention has for its object to provide an improved electric bell, the same embodying certain novel features of construction to be hereinafter described and claimed.

A further object of the invention is to provide the bell with a visual signal in the form of an electric lamp.

The invention also has for its object to provide a novel and improved mounting for the bell and the lam hereby the parts are securely held and no 5' able to be jarred loose.

In order that the invention may be better understood, reference is had to the accompanying drawing, in which Figure 1 is a side elevation and Fig. 2 a front elevation of the apparatus, the bell being shown in section; Fig. 3 is a vertical section on the line 3-3 of Fig. 2, and Fig. =1 is a horizr :1 section on. the line 4-4 of Fig. 2.

Referring specifically to the drawing, 5 denotes a standard which supports the bell 6, as well as the other parts of the appara tus. The upper end of the standard has a boss 7 which is provided with a threaded opening to receive'a threaded tubular stem 8, said stem rising a suitable distance from the boss and supporting the casing 9 of a lamp. The lamp casing has a threaded opening at its base so that it may be screwed on the stem 8. In the top of the hell 6 is an opening through which the stem 8 passes, the bell being located between the base of the lamp casing 9 and the top of the boss 7, and between which parts it is securely clamped by screwing down the lamp casing until the bell is clamped against the boss. A washer 10 is interposed between the bell and the boss.

The standard 5 has outstanding, spaced bracket arms 11 and 12. On the arm 11 is mounted an electro-rnagnet 13, the armature 14 of which carries the hammer 15 of the Specification of Letters latent.

' hell 6 is sounded by the latter.

Patented t ee. '12, rate.

Serial No. 870,622.

bell 6. The armature is pivotally supported on a pin 16 carried by the standand 5, the latter having an opening 17 across which the pin extends, and 1n which opening the pivoted end of the armature works.

To the armature 1a is made fast a spring;

18 one end of which extends in. a bow from the rear end of the armature and hooks into a recess 19 in the standard 5, the other end of the spring extending along the armature, 3b 1n spaced relation therewith, and carrying;

u The standard 5 carrlcs a terminal 22 to which one of'the circuit wires 23 of the magnet 13 is connected, the electric current being taken from a battery or other suitable source which has not been shown. The Wire 23 is connected to the winding of the magnet and from the latter a wire 24 ertendsto the contact pin 21. The terminal 22 is suitably insulated from the standardfi, and the latter also carries a terminal 95 to which the other circuit wire 26 of the magnet is connected. The terminal 25 is not insulated from the standard, and one side of the electric circuit is therefore grounded on the standard. The spring 18 is in electrical connection with the standard throughthc parts 16 and let. It will therefore be evident that. when the circuit is closed, the magnet 13 is energized and the armature 1-1 is attracted. This breaks the circuit by the separation of the contacts and 21. As the magnet is as now deencrgizcd it ceases to attract the armature and the latter is pulled back by the" spring 18. The contact 20 new again touches the contact 21, and the circuit is again closed, whereupon the armature is again attracted. The armature is thus oscillated, and as it carries the hammer 15, the

The lower end of the standard 5 has a threaded stem 27 for connection to a suit able support.

The casing 9 contains a socket 28 for an electric lamp $9, the latter having a base which is screwed into the socket. The lamp is an ordinary incandescent lamp The 1.10

electric current for the lamp is obtained from the magnet circuit in the following manner: The lamp base has the usual contact which engages the npper end of a wire 30 passing through the stem 8, said wire being insulated except at its ends. The lower end of the wire seats on a spring strip 31 carried lay 'hntinsnlatetl from the standard 5. To this strip is connected a branch conductor 32 leading from the terminal The lamp is also grounded on the standard. Thus, when the magnet circuit is closed, the lamp is lighted. The lamp however burns steady as it is not in that part of the magnet circuit which is intermittently interrupted by the contacts 20 ill. The spying strip 31 paresses against lower end of the wire 30, whereby separation of the parts by vibration is effectually prevented;

lamp casing 9 has a cover 33 between 1 ch and the lamp 29 is placed a spring 34, ch latter holds the lamp from being ecl loose= automobiles and launches. H applied to the JLilB appasatus hereinbefore described is designed more particularly as an alarm for former it may he mounted on the rafliator cap.

ll claim 2- A signal apparatus comprising a bell, a standard, a tubular threaded stem carried by the standard and projecting" from the top thereof, the bell being mounted on theprojecting end of the stem, a lamp casing having a threaded opening in its base into which the projecting end of the stem, above the bell, is screwed, the hell being clamped between the top of the standard. and the base of the lamp casing, an electric lamp in the casing, said casing having an integral socket in line with the stem to receive the lamp base, a conductor for the lamp circuit passing through the stem into the socket and projecting from the lower end of the stem, and a contact plate on which the projecting lower end of the conductor bears.

In testimony whereof I aifix my signature in presence of two witnesses.

. JUHN ROEDEB. Witnesses Geo. A. NEWTON, CLAIR J. Pnitez. 

